Diagnostic Procedure

With CONSULT-II 

1. Start engine.
2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.
3. Read out the value of "WAIT DETCT SW".
   Fig 1: Checking Wait Detection Switch Signal

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: Identifying "WAIT DETCT SW"

   Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II 

1. Start engine.
2. Check voltage between transfer control unit harness connector terminal and ground.
   Fig 3: Transfer Control Unit Harness Connector Terminal And Ground Voltage Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 4: Checking Voltage Between Transfer Control Unit Harness Connector Terminal And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO 5.
2. NG: GO TO 2.

1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the wait detection switch harness connector.
3. Check continuity between transfer control unit harness connector E143 terminal 43 (G/Y) and wait detection switch harness connector F59 terminal 10 (G/Y).
   1. Continuity should exist. 

   Also check harness for short to ground and short to power.

OK or NG 

1. OK: GO TO 3.
2. NG: Repair or replace damaged parts.

Fig 5: Checking Continuity Between Transfer Control Unit Harness Connector E143 Terminal 43 And Wait Detection Switch Harness Connector F59 Terminal 10

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect wait detection switch harness connector.
3. Check continuity between wait detection switch harness connector F59 terminal 11 (B) and ground.
   1. Continuity should exist. 

   Also check harness for short to ground and short to power.

OK or NG 

1. OK: GO TO 4.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.

Fig 6: Checking Continuity Between Wait Detection Switch Harness Connector F59 Terminal 11 (B) And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect wait detection switch harness connector.
3. Remove wait detection switch. Refer to "LOCATION OF ELECTRICAL PARTS ".
4. Push and release wait detection switch and check continuity between wait detection switch terminals 10 and 11.
   Fig 7: Wait Detection Switch Terminals 10 And 11 Continuity Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 8: Checking Continuity Between Wait Detection Switch Terminals 10 And 11

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO 5.
2. NG: Replace wait detection switch. Refer to "LOCATION OF ELECTRICAL PARTS ".

Check transfer control unit input/output signal. Refer to "TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE ".

OK or NG 

1. OK: GO TO 6.
2. NG: Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG 

1. OK: Inspection End.
2. NG: Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".